Piston-ring compressor



G. GARBETH.

' PISTON RING COMPRESSOR. APPLICATION FILED JAN. 5, I921.

Patented July 1]], 1922 INVENTOR. George Gareih- Y ATTORNEY y a a. i ais Heron-nine conrniisson.

Specification of Letters Patent.

Patented July ill, 1922.

Application filed January 5, 1921. Serial No. 435,118.

To all whom it may concern:

Be it known that l, GEORGE GARBETH, a citizen of the United States,residing at tockton, county of San Joaquin, State of California, haveinvented certain new and useful Improvements in Piston-Ring Compressors;and I do declare the following to be a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, and to the charactersof reference marked thereon, which form apart of this application. i

This invention relates to improvements in piston-ring compressors, thisclass of device being particularly adapted to be used in connection withthe assembling of gas engine pistons and cylinders, and forms a handytool for all engine repair men, as well as for private owners who takedown their own car engines at times.

The principal object of my invention is to provide a device of thischaracter, that is, one by means of which the rings of a piston may becompressed or squeezed to allow of their being readily slipped intothecylinder bore in connection with the piston on which they aremounted, which is adapted to serve its purpose and function whether thepistons are to be inserted from the top or bottom of the cylinder block.

A further object is to provide a means for retaining the rings in theirsqueezed or compressed position even after the pressure of the hands onthe device is removed, so that the latter, with the piston, may be laiddown at will without the compressor dropping oil.

The device may also be adjusted to take rings or pistons of differentsizes.

A further object of the invention is to produce a simple and inexpensivedevice and yet one which will be exceedingly eflfective for the purposeswhich it is designed.

These objects I accomplish by means of such structure and relativearrangement of parts as willfully appear by a perusal of the followingspecification and claims.

In the drawings similar characters of reference indicate correspondingparts in the several views.

Fig. 1 is a perspective elevation of my device, showing the samein'expanded position.

Fig. 2 is aplan view of the same, showing the compressing bandcontracted.

Fig. 3 is a fragmentary section through a handle, taken on a line 33 ofFig. 1.

Referring now more particularly to the characters of reference on thedrawings, the numerals 1 and 2 denote a pair of flat handles pivotedtogether intermediate their ends as, at 3, the lower portions of thesemembers being the longer and serving as the handles proper. They arealso so connected that when the lower portions are spread, the upperportions are practically adjacent each other while when the reverseconditions take place, thelower portions overlie each other.

. The upper end of the handle 1 is pivoted to one end of a flexiblemetal strip 4 which lies in a plane parallel to the plane of the handlesand is slidably projected through a guide sleeve 5 formed on the outsideand adjacent one end of a relatively wide and thin metal band 6 ofspring steel or similar material, this band projecting considerablybeyondthe edge of the strip l in the direc- H 7 tion opposite to thehandles.

The band 6 normally assumes a circular form, the end opposite that endhaving the sleeve 5 thereonv overlapping the latterat all times so thatthe size of the circle formed may be altered, the amount of such overlapdepending on the movement of the handles, as will be seen. The band 4 isprovided with a plurality of orifices 7 adapted to engage with lugs 8projecting outwardly from the band 6, the position of these lugs thereonbeing such that under no conditions of con traction of the band willsaid lugs come into contact with the end having the sleeve 5 thereon.The lugs and orifices are all evenly spaced, so that the band 6 may bemanually manipulated so as to permit of the engagement of the orifices 7with dii'ferent ones at a time of the lugs, thus altering the size ofthe circle made by the band regardless of the movement of the handles,the range of: movement of the latter being limited by the fact that theupper end of the handle 1 will bring up against the sleeve 5, the otherhandle 2 being pivoted on to this sleeve.

In operation it will be soon that when the the band 6 contracted whendesired a quadand which passes through the other handle 2, there being aclamping nut 12 on the latter endv of the bolt and a fixed head 13 onthe other end thereof bearing against the quadrant.

. By this means, the handles may be moved to any position, and while soheld by one hand, the nut 12, may be tightened with the other toclamp'the handles in position.-

On account of the projecting of the main clamping band 6 above thesleeve lugs, handles, etc, for a considerable extent, this band may beinserted without interference into the flared. or chamfered portionalmost universally found in the lower ends ofgas engine cylinders, sothat the piston rings may be held compressed until they pass into theactual cylinder bore. By inverting the'position of the device relativeto the piston, it may of' course be usedto place the pistons into thecylinders from the top, when the latter have removable heads.

The handles, extending as they do parallel to the axis of the band andclose to the latter,

, with the bottom make it easier and handier for the mechanic tomanipulate andhold the piston, since the weight isalmost directly inline with his arm instead of a considerable distance to one side'as isthe case when the handles extend away from or at right angles to theaxis of the band. Also with my positioning of the handles,- the handmanipulating the same is always in the clear and will never interfere.or top surface of the cylinder block. j r

' It' will also benoted that once the device is assembled, no parts, canfall apart, since the spread of the upper portion of the handles ispurposely limited to be less than the length of the band 4.

-From the foregoing description it will be readily seen that I haveproduced such a device as substantially fulfills the objects ofthe'invention as set forth herein. 7

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to and do not form a departure from the spirit ofthe invent-ion, as'defined by the appended claims. Havmg tlflUSClQ-SCIIbGd my nvention what Iclann as new and useful and desire tosecure by Letters Patent is 1. A piston ring compressor comprising asplit springband whose ends normally overlap and shapedtoform a circle,a'pair of handles extending parallel to the axis of therband, one handlebeing directly conthe connection of the first named handle therewith,the handles being arranged to be manipulated in unison to alter the sizeof the band circle.

2. A piston ring compressor comprising a split spring band whose endsnormally overlap and shaped to form a circle, a pair of handlesextending parallel to the axis of the hand, one handle being directlyconnected to the band, and means between the other handle and the bandand connected to both, and at a point on theband opposed to theconnection of the first named handle therewith, the band projectingabovethe termination of the handles for a considerable distance. 7 i

3. A piston ring compressor comprising a split spring-band adapted toencircle a ring, a pair of handles pivoted together,

one handle being directly connected to the band, means between the otherhandle and band and connected to both, and at a point on the bandopposed to the connection of the first named handle therewith, aquadrant on one handle projecting to one side to lie adj acent the otherhandle, and clamping means between the last named handle and thequadrant. r

4:. A piston ring compressor comprising a split sprin band whose endsnormally overlap and s aped to form a circle, a pair of handles pivotedtogether intermediate their ends and;the upper ends being connected tothe band .at opposed points thereon, the normal tendency of the bandbeing to expand, a slotted quadrant on one handle projecting to oneside, to lie adjacent the other. handles, a headed bolt passing throughthe slot and through the other handle, and a nut on the bolt arranged tobe turned to clairlnp'the quadrant and handle together at W1 5.pistonring compressor comprising a split spring band whose'ends normallyoverlap and shaped to form a circle, a flexible band adjustablyconnected to the spring bandon the outside thereof, a sleeve adjacentthe outer end of the spring band through which the flexible band passes,and a pair of handles pivoted together inter.- mediate their ends,.theupper ends of said handles being respectively connected to the sleeveand to the end of the flexible band beyond said sleeve. i i

6; A piston ring compressor comprising a split spring band whose endsnormally overlap and shaped to form a circle,-a sleeve at the outer endof the band, a flexible band slidable through the sleeve extendingacross the sleeve-end of the spring. band and wrapping. around. thelatter for a certain distance beyond such end, the flexible band beingprovided with a plurality of orifices, lugs projecting outwardly fromthe spring band and adapted to engage with certain ones at a time of theorifices, and handle members pivoted together and connected at theirupper ends to the sleeve and to the adjacent end of the flexible bandrespectively and arranged to be manipulated to alter the distancebetween their points of connection with the sleeve and band, the springband acting to normally hold such points of connection adjacent eachother.

7. A piston ring compressor comprising a split spring band whose endsnormally overlap and shaped to form a circle, a sleeve at the outer endof the band, a flexible band slidable through the sleeve extendingacross the sleeve-end of the spring band and wrapping around the latterfor a certain distance beyond such end, the flexible band being providedwith a plurality of orifices, lugs projecting outwardly from the springband and adapted to engage with certain ones at a time of the orifices,and handle members pivoted together and connected at their upper ends tothe sleeve and to the adja-.

cent end of the flexible band respectively, the sleeve and flexible bandbeing set down considerably from the upper edge of the spring band andthe handles extending parallel to the axis of the spring-band circle andaway from the upper edge of the band.

In testimony whereof I afiix my signature. 30

GEORGE GrARBElHv

